# STCs that may be installed: Air Tractor AT-400A

A list on [Air Tractor AT-400A](https://openairdocs.org/model/air-tractor-at-400a.md).

In force first, then newest. The registry doesn’t record which STCs an aircraft has.

- [STC SA04484CH](https://openairdocs.org/stc/SA04484CH.md): Installation of a Reabe Aircraft Improvement Power Gate Control System · Reabe Design LLC
- [STC SA01800SE](https://openairdocs.org/stc/SA01800SE.md): Fabrication and installation of new or replacement of existing instrument panel lights dimmer control. · TCW Technologies, LLC
- [STC SA01861SE](https://openairdocs.org/stc/SA01861SE.md): Fabrication and installation of Landing Light Controller · TCW Technologies, LLC
- [STC SA12204WI](https://openairdocs.org/stc/SA12204WI.md): Wing Spar Cap manufacturing process change · Air Tractor Inc.
- [STC SA03040CH](https://openairdocs.org/stc/SA03040CH.md): Installation of a digital payload hopper quantity and spray boom pressure indicating system · Reabe Design LLC
- [STC SA7965SW](https://openairdocs.org/stc/SA7965SW.md): Application of fabric and polyurethane finishing system. · Shady Aviation LLC
- [STC SA01240SE](https://openairdocs.org/stc/SA01240SE.md): Installation of secondary voltage indication system · Visual Instruments LLC
- [STC SA04676CH](https://openairdocs.org/stc/SA04676CH.md): Installation of a True Quantity Gauge System · Reabe Design LLC
- [STC SA4503NM](https://openairdocs.org/stc/SA4503NM.md): Remove original cloth covering and install Ceconite covering · Ceconite Division of Poly-Fiber Inc.
- [STC SA02266SE](https://openairdocs.org/stc/SA02266SE.md): Installation of a Lever Throttle Quadrant · Kawak Aviation Technologies Inc
- [STC SA04776NY](https://openairdocs.org/stc/SA04776NY.md): The HIPEC Covering and Finishing System must be performed and maintained · HIPEC Aircraft Coatings Inc.
- [STC SA03819NY](https://openairdocs.org/stc/SA03819NY.md): Installation and maintenance of Oratex 6000 Covering and Coating System · Lanitz-Prena Folien Factory GmbH
- [STC SA00401BO](https://openairdocs.org/stc/SA00401BO.md): Installation of a SkyTrax100B UAT receiver · Avidyne Corporation
- [STC SA00888SE](https://openairdocs.org/stc/SA00888SE.md): Option 1: Install Walter M601-E11S engine and a Hartzell HC-B3TW-3/T10282N+4 propeller or a Walter M601-E11 engine and an Avia V508-E-AG 106/A propeller per the Master Drawing List and Installation Instructions given in Approved Model List SA00888SE. (Note: Prior to July 17, 2002, the model M601-E11S engine was designated as the model M601-E11 engine). Option 2: Install a Walter M601-D11 engine and Avia V508-E-AG 106/A propeller per Cascade Flying Service Master Drawing List CFS-MDL-0001 Rev G, dated June 15, 2004, and Cascade Flying Service Document CFS-IM-107, Rev A, dated July 29, 2003, “Installation Instructions for Walter Turbine Installation on Air Tractor 300 & 400 Series Ag Aircraft,” or later FAA-approved revisions to these documents. NOTE: The Air Tractor model AT-400, AT-402B, AT-502, AT-502B, and AT-503A airplanes are not eligible for modification under option 2. · Cascade Flying Service LLC
- [STC SA02268CH](https://openairdocs.org/stc/SA02268CH.md): Installation of Airwolf Filter Corp. Air Oil Separator · Airwolf Filter Corporation
- [STC SA02135SE](https://openairdocs.org/stc/SA02135SE.md): Installation of Electronics International Inc. Glass Panel Engine Monitor (with In-Flight Data) · Electronics International Inc.
- [STC SA04165NY](https://openairdocs.org/stc/SA04165NY.md): Installation of Latitude Technologies Skynode S200 Satcom system must be performed · Latitude Technologies Corporation
- [STC SA01323CH](https://openairdocs.org/stc/SA01323CH.md): Installation of a ground single point fueling system. · Turbine Conversions Ltd
- [STC SA00905SE](https://openairdocs.org/stc/SA00905SE.md): Install modified engine cowl. · Cascade Flying Service LLC
- [STC SA02205SE](https://openairdocs.org/stc/SA02205SE.md): Installation of a replacement airframe fuel pump in accordance with Cascade Flying Service Master Drawing List FW-CFS545-90, Rev. B, dated October 19, 2011, or later FAA approved revision. · Cascade Aircraft conversions LLC
- [STC SA01745WI](https://openairdocs.org/stc/SA01745WI.md): Installation of a Cable Cutter System on the Main Landing Gear · Hershey Flying Service Inc
- [STC SA00382BO](https://openairdocs.org/stc/SA00382BO.md): Installation of Globalstar Antenna and Cradle provisions to support a Globalstar GPS-1700 in non-composite airplanes · Avidyne Corporation
- [STC SA02276AK](https://openairdocs.org/stc/SA02276AK.md): Installation of AMSAFE Aviation Inflatable Restraints · AMSAFE Inc.
- [STC SA00478CH](https://openairdocs.org/stc/SA00478CH.md): Installation of Cooper Superflite 102 Fabric. · Aviation Products Systems Inc.
- [STC SA00489LA](https://openairdocs.org/stc/SA00489LA.md): Installation of winglets. · Aero Spraying Service Inc.
- [STC ST03554CH](https://openairdocs.org/stc/ST03554CH.md): Installation of Rotary Gatekeeper and provisions equipment · Turbine Conversions Ltd
- [STC SA00403SE](https://openairdocs.org/stc/SA00403SE.md): Installation of Vortex Generators on the wings · Micro AeroDynamics Inc
- [STC SA03199CH](https://openairdocs.org/stc/SA03199CH.md): Install auto fill fuel system · Wilbur-Ellis LLC
- [STC SA02985CH](https://openairdocs.org/stc/SA02985CH.md): Installation of a Cool Start System in accordance with Installation Instructions, Revision A, dated April 14, 2011, or later FAA Approved revision. · Turbine Conversions Ltd
- [STC SA4294SW](https://openairdocs.org/stc/SA4294SW.md): Installation of freon air conditioning unit (wind-driven compressor). · Collins Aircraft Dynamics Inc
- [STC SA00068SE](https://openairdocs.org/stc/SA00068SE.md): Installation of fuel flow/pressure instruments. (W/TSIO-360-MB1) · Electronics International Inc.
- [STC SA02110CH](https://openairdocs.org/stc/SA02110CH.md): Installation of a Time Trac Data Recorder · P2 Incorporated
- [STC SA2693NM](https://openairdocs.org/stc/SA2693NM.md): Installation of Electronics International digital volt/amp gauges and accessories. · Electronics International Inc.
- [STC SA00171BO](https://openairdocs.org/stc/SA00171BO.md): Installation of Pratt & Whitney Engine Services, Inc. Aircraft Data Acquisition System ADAS+, P/N ADAS-K-010. · Pratt & Whitney Engine Services Inc.
- [STC SA2505NM](https://openairdocs.org/stc/SA2505NM.md): Installation of Pheromone aerial application system. (AT-400A RESTRICTED CATEGORY) · Herculite Products Inc
- [STC SA04677CH](https://openairdocs.org/stc/SA04677CH.md): Installation of a Powered Hopper Lid and Auger System · Reabe Design LLC
- [STC SA01639NY](https://openairdocs.org/stc/SA01639NY.md): Replacement of 12 refrigerant in air conditioning system with Enviro Refrigerant Hotshot R414B. · Scale Modelbuilders Inc.
- [STC SA8075SW](https://openairdocs.org/stc/SA8075SW.md): Installation of fiberglass covering. (M-62 SERIES PT-19) (G-73 SCHWEIZER) · Razorback Fabrics Inc
- [STC SA01258SE](https://openairdocs.org/stc/SA01258SE.md): Installation of the Automatic Flagman Dispenser Models in accordance with Automatic Flagman Master Drawing Lists specified in attached AML, or later FAA approved revision.This STC supercedes several existing STC s as listed in the notes on the attached AML. · R-S Sales Inc.
- [STC SA1110GL](https://openairdocs.org/stc/SA1110GL.md): Surrendered and incorporated into STC SA00478CH. · AAR
- [STC SA01528CH](https://openairdocs.org/stc/SA01528CH.md): Installation of Walter M601E-11 model turbine engine and an AVIA Propeller Limited VJ8.510 or VJ8.510AG propeller system or Hartzell HC-B3TW-3/T10282NS+4 model propeller. · Turbine Conversions Ltd
- [STC SA265NW](https://openairdocs.org/stc/SA265NW.md): Installation of Automatic Flagman Model No. 4 (Dispenser System) on the upper surface of the right wing root · R-S Sales Inc.
- [STC SA00568WI](https://openairdocs.org/stc/SA00568WI.md): Installation of a Compro Aviation Driftfinder DFS-10 system which injects oil into engine exhaust to produce smoke that determines wind speed and direction. · Compro Aviation Inc
- [STC SA00151SE](https://openairdocs.org/stc/SA00151SE.md): Fabrication and Installation of vortex generators and "delta wings" on the wings and a strake mounted above the left- and right-hand wing/fuselage junctions. · Aeronautical Testing Service Inc.
- [STC SA00648AT](https://openairdocs.org/stc/SA00648AT.md): Installation of chemical rinsing system. · Paul S Woods
- [STC SA7469SW](https://openairdocs.org/stc/SA7469SW.md): Install freon air conditioning system with inverter and 117 VAC compressor. · Collins Aircraft Dynamics Inc
- [STC SA3325SO](https://openairdocs.org/stc/SA3325SO.md): Installation of a chemical rinsing system. · Paul S Woods
- [STC SA2853CE](https://openairdocs.org/stc/SA2853CE.md): Installation of Phoenix Aerospace DC voltage regulator. · Phoenix Aerospace, Inc
- [STC SA4302NM](https://openairdocs.org/stc/SA4302NM.md): Installation of Electronics Int'l digital automatic engine analyzer. · Electronics International

## The whole list in SQL

Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS:

```sql
SELECT s.stc_number, s.description, s.holder, s.status, s.status_date, m.matched_model
FROM (
  SELECT stc_number, min(matched_model) AS matched_model
  FROM 'https://openairdocs.org/data/latest/faa_aircraft_model_stc.parquet'
  WHERE aircraft_model_code IN ('0390203')
  GROUP BY stc_number
) m JOIN 'https://openairdocs.org/data/latest/faa_stc.parquet' s USING (stc_number)
ORDER BY s.status = 'Current' DESC, s.status_date DESC, s.stc_number
```

This list as a web page: https://openairdocs.org/model/air-tractor-at-400a/stcs

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